Drinking cup



FIG. 1 is a side elevational view of a drinking cup showing my new design, the side opposite being a mirror image thereof.

FIG. 2 is a side elevational view rotated 90° _from that of FIG. 1.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a drinking cup, as shown and described. 